yasamoka wrote@haidcar: yes I agree with the valid points you've made. There is no valid reason the quad core should cause any lag. There are most probably other reasons. The Quad still competes with the S4, there's no doubt about that, but at the expense of power efficiency (as you said, S4 is 28nm), and worse single- and double-threaded performance (this comes with all multi-core CPUs).
EDIT: Comparable to what Computer CPUs? The Core i7 920, when OCed to around 4GHz, is capable of pushing 50GFLOPS in Linpack. Current i7's (SB-E hexacores) OC 20% higher and have a newer architecture (30%-50% more performance per core per clock cycle), and have 6 cores vs 4 cores (another 50%). It is safe to say they are more than 3 times as powerful. 150GFLOPS? Mobile CPUs are 500-1000 times slower (no surprise, they are mobile CPUs).
i am not saying that mobile processor are as fast as an over clocked i7 920, but it safe to assume that next generation cortex a15 got similar performance to mid range mobile processor core 2 due and core i3 and maybe i5
but lets take the i7 920 for example clocked at 2.66-2.9Ghz capable of 83,000 MIPS while the ARM cortex A15 clocked @ 2.5Ghz is capable of 35,000 MIPS. its clear that the i7 has more than twice power as the A15.
So mobile processor are indeed slower than their pc relatives but but not by a factor of 500-1000.
